![]() ![]() A 1.5 inch sample of about 200 strands of hair (about the size of a #2 pencil) closest to the scalp will give 100mg of hair, the ideal sample for screening and confirmation. Some labs will only test head hair so it is important to ask about this if you don’t have at least 1.5 inches of head hair. Most laboratories will only test about 1.5 inches of head hair without a special request and increased cost. Typically, each ½ inch of head hair is going back about 30 days. Standard hair testing has about a 90 day look back period to detect drugs at about 7 days after ingestion. Hair tests analyze the drugs inside the hair shaft on which external contaminants and chemicals have no effect. Hair drug testing has a much longer detection window than urine drug testing plus it is significantly more difficult to cheat on hair drug testing. Many judges and court systems are now requiring hair drug testing. Hair testing detects drugs about 7 days out and about up to 90 days. Hair drug testing is a good test for a date rape test. If a hair drug test is required for employment, the individual who shaved their entire body will not be eligible for the jog. This make it impossible to do the hair test. Some folks will shave all the hair off their body. There are not any ways to cheat on the hair drug test. The laboratory tests the drug metabolites that are embedded into the hair. The hair is cut at the base of the scalp. Testing a hair follicle would involve plucking hair out of the scalp. Often called a hair follicle test, this is not the correct terminology. You can also order your hair test online. Drug testing centers for hair drug testing are available in all areas of the United Stated. All of our drug tests can be purchased online, or by calling us at 86 to schedule a test at a location near you. National Drug Screening provides 5-panel, 7-panel, 9-panel, 12-panel, 14-panel and 17-panel hair follicle testing. For that reason, hair drug or hair alcohol EtG tests are better suited to detect binge or chronic drug usage over a more extended period of time. Urine drug tests can only identify drug use for approximately a week into an individual’s recent past. It is also becoming more common in the legal industry when court-ordered drug testing may be required, like for probation, or divorce and child custody cases that may have mandatory drug testing. Since hair tests can identify drug use further back in a person’s recent past than a urine test, many employers are now opting for a hair drug testing, particularly for pre-employment screening. For head hair the individual will need a minimum of 1.5 inches of hair otherwise the hair specimen can be body hair. Hair testing is very popular with Non-DOT employers. As of the beginning of 2021 hair testing is not allowed for DOT testing or Federal workplace drug testing.
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